Window.



PATENTED MAR. 31, 1903.

H. L DAVISON.

WINDOW.

APPLIOATIQN FILED AUG. 20. 1907.

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N O NW m A m J w H APPLICATION FILED AUG. 26, 1907.

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PATENTED MAR. 31, 1908. H. J. DAVISON.

WINDOW.

APPLICATION FILED AUG. 26, 1907.

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) PATENTED MAR. 31, 1908.

H.- J. DAVISON.

WINDOW. APPLICATION FILED AUG. 26, 1907.

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@w 6 MW W I w i I navy a subject of the King of residing at Moorfield, Sutherland UNITED STAW N HENRY JOCELYN navrson, or BEXHILL, ENGLAND.

WINDOW.

No. ass,' 177. 1

To all whom it may concern:

Be it known that I, SON, post-captain in His Ma'estys roya reatBritain, avenue, Bexh ll, 1n the count of Sussex, England, have nvented new an useful Improvements Relat1ng to Windows, of which the following is a specification.

Th s invention relates to windows of the typem which two sashes are hin ed together and inserted in a single frame. bviously in such windows the hinge line may be either vertical or horizontal, the pins which guide thesash being placed either in slots at the top and bottom or in slots on the two sides re The invention consists in an improved method oflocking such a window in any desired position; and is of course equally a plicable tolwindows 'of both types. As, owever, the window having a vertical hinge ossesses many advantages over the other orm, the invention will e described as applied to this type. The invention is illustrated in the accompanying drawings, in which- Figure 1 shows an elevation of the window in its closed position as seen from the outside.

Fig. 2 is a sectional plan of the same, indicating also in dotted lines the open position of the window. Fig. 3 is an enlarged detail view showing parts of the end of one of the windows in section to illustrate the locking mechanism. Fig. 4 shows the same parts in section in a plane at right angles to that of Fi 3. Fig.5 is a detail view showing the loo 'ng lever of the window.

As will be readily seen from Fig. 1, the window consists of two main sash frames at a which are united by hinges in a vertical line frames by screws 'lindrical bosses which are produced to orm at b. When in the open position, as shown by dotted lines in Fig. 2, the verticalline b lies some distance from the plane of the sashes, while the two remote ends of the two frames approach closer together. Each-of the frames carries at the top and bottom on its outer end corner or t e like and bearin cy pins d. These pins are inserted in corre spending holes in small plates of metal. a which differ in the top and bottom of'the window. Those at the to of the window are simply short bars adapts to slide :within the Those at the bottom HENRY Jooninm Dav which do-;not,

, various ways.

.the rack bar a, the stud plates 0 secured to the hole w and retains the sufficiently to bring latented Iarch 31,

have formed on their under surface racks 9 however, extend throughout the wholebreadthlof the slip. The smoothedges of the slip. rest" upon two' a le bars 'h at the bottom of the window.

esc bars;

are joined at intervals at .the bottom by rivets k surrounded by sleeves or rollers m.

In order to lock the window a rackbarn is arranged beneath it; and this" when raised is adapted to mesh with the two racks gand so retain them in an osition "in which they may be found. T e l) has beneath it a second smoothib'ar 0 which rests between the lowest vertical'portions of the angle bars h. flhe bar a is further "con nectedrto the bar '0 by the slott d ro'ectiorw 3' upon it engpiing 'over pins 1', o t e or 0 so that the rec ar is moved down, as well as up, positively. On the underside oi are a number of notches 'p, arranged at the positions of the rivets k, and these noioheh have one side sloped so asto form an inclined plane which can ride up the rollers m. At the center of the bar 0 or in anyotherpuit able position there is provided a. projtiug stud q, the end framing of the window through a'sla'ntmg; slot in the angle-bar h, and lies between tfifi Gil at. n may'be rais dlnithe devise illustrated of which protrudes from 1 vertical ends of a forked lever r pivotodat e.

This lever carries a hollow boss t inwhich is mounted a in'u,.pressed downwardsby a.

n one 'positionof'the levefrgths spring w. I pin it is forced into a hole a: in the plate on which the lever is mounted and so looks the lever in position. -A"bent* strip a secured loosely on the pin .2 serves to raise t a The action of theapparatus will be understood at once. hen the lever r is moved, sa to the right, the stud q is pushed to the is t, and carries with it the whole The sloping surfaces of the notchesap'ij idihg up the rollers we raise the barn an with-"it movm slot in the angle-bar k. inally the slo ing along the looking rac bar 'n is brought into engagement with the racks g on the slips of metal 0 so looking the window, .while the pin udrops into the lever r in the locking position. The fact'thatithe rack barn-is separate from the bar to have a slight lateral movement s'o thatm case its teeth should be lyingsdirectl neath those of the racks g it can he s d the teeth dnto 0 permits the former upon the bar it and the metal slips 5.

To assist in this action also, the teeth may be formed with suitably rounded tops. As mentioned above the angle bars 72 are not united at the bottom save by the rivets 7c and preferably the slot. in the wood framing in which they are placed is a little deeper than the angle bars and ha." its lowest surface sloped. to one side, with a channel 1 leading from the slot to the under side of the sill or other convenient position. In this way any water which may enter the slot is drained off without iruronvenienec.

Obviously many details of the device are open to variation. For exz'nnple various means may be provided for making a tight joint in. out of the hinges at l). in the form Sl'iUWl'i in Fig. 2 there is simply a projecting bond 2 on the one frame a which in the closed position overlaps the edge of the other frame while a tongue 8 is adapted to enter the rabbet 4. Devices such as this will be ob vious to those acquainted with the art, and they form no part of the invention need not be further described or illustrated. in similar way alterations may be made in the manner of raising the rack bar 11. For example an obvious altcrz'iative is to provide pins ontho bar 0 and sloping slots in the channel bars 1.. These will cll'ect exactly the same purpose and effect it in the same manner. Another alternative 3;: use eccentrics beneath the bar 0 rotated by projecting shafts, but in this case it diiiicult to get the required leverage and to operate the window from one handle. Many such devices as these are known to be mechanical equivalents and it is not necessary therefore to outline them all in this place. it is possible also to actually do without the teeth These teeth, it will have been seen, provide a positive means for preventing relative movement between the wind w and its guides, but it will generally be sullicient to secure the window by frictional engagement between two surfaces and in this case smooth or slightly roughened bars will be all that is required in place of theracl: bar '12. and the slips e. If desired, also, the bar may be normally pressed. up by springs and may be forced down to release the window in some one of the we suggested above for raising it. (.lbvimusly also it may in some be possible to do without the forked lever r since this only to reduce the force required to move the stud q. Such variations or omissions as these do not afl'ent the workii'ig of the invention and are therefore to be considered within the scope of the application. What I claim as my invention is 1. In a window the combination of two scan? 2. In a window the combination of two sashes and means hinging them together, a window frame with guiding grooves at the top and bottom thereof, sliding pieces pivotally' attached to the sashes near their free ends and working in the grooves, rack teeth on the lower sliding member of each sash, and a locking rack in the windowframe with means for raising it into locking engagement with. the sliding members and for lowering it out of engagement with said members.

3. In a window the combination of two sashes and means hinging them together, a window frame with guiding grooves at. the top and bottom thereof, sliding pieces pivotally attached to the sashes near their free ends Enid working in the grooves, rack teeth on the lower sliding member of each sash, a locking rack mounted in the lower groove beneath the sliding members, said rack being free to make a small longitudinal motion, set of stationary cross pins over which inclined surfaces on the reel; bar adapted to work, and means for pushing the bar longitudinally whereby it is caused to slide up over the cross pins and to come into engagement with the teeth on the sliding members.

4. In a window the combination of two sashes and means hinging them together, a window frame with guiding grooves at the top and bottom thereof, sliding pieces pivotally attached to the sashes near their free ends and working in the grooves, rack teeth on the lower sliding member of each sash, a rack bar mounted with freedom for a small longitudinal movement in the lower groove of the Window frame, means adapted to cause said bar to rise when moved longitudinally in one direction and to fall when moved in the other direction, a lever and means for,

supporting it upon the window frame and connecting means betivcen the lever and the race: bar.

in witness whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY JOCK/LYN DAVESON. Vl itnesses Z ll'unnn'r A. GILL, A. E. GnnLL. 

